Have both. Got the Nevadas off Rokslide and seem to be broken in about as much as my Briksdals which are fairly new but leather has definitely broken in and boot inner has formed somewhat. So my opinion FWIW
Nevadas are flexible, full stop, definitely less stiff than a Camino and noticeably less stiff than a Briksdal.
The Briksdal will be intimidatingly stiff when you first give it a go and assuming you’ll just throw them on at your house once you received them, you will think they’re super stiff which isn’t a fair assessment I think.
Once you get in the mountains with the Briksdal and going up a somewhat steep and uneven surface they will shine. They will feel much more flexible than they did initially. I only mention this cause if you’ve never gone with a stiff boot, they can feel stiff but the terrain you’re on makes them feel much more flexible while a less stiff boot like the Nevada is already flexible and most uneven snd steep terrain isn’t going to make the boot feel significantly more flexible, unless you’re side hilling, which I have not done in the Nevadas but I assume Id notice it.